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No, Your Furnace Should NOT Be Blowing Cool Air!
Justin Angelo • November 17, 2023

No, Your Furnace Should NOT Be Blowing Cool Air!


Though it typically means something’s up, discovering that your furnace is blowing cold air into your home isn’t always a serious problem. If you haven’t used your furnace since last season, for instance, it can take your furnace some time to heat up. This is also a common issue if your furnace has been off for several hours. 


With that said, however, there are more reasons your furnace might be blowing cold air, and some will require immediate attention.


Why Is My Newark Furnace Blowing Cold Air? Check the Thermostat

It’s likely you’ve landed here as a result of scrambling to search “Why is my Newark furnace blowing cold air?’ on your favorite search engine, and the first suggestion we can offer is to check your thermostat. 


If you have it set in its “On” position, it will force your furnace’s fan to push air to the vents even when the furnace isn’t cycling. As such, unheated air will be pushed into the ducts to meet the constant demand for airflow.


You can correct the problem by switching your thermostat to its “Auto” setting, which will prevent the system from pushing out air until the furnace starts a new cycle.

Continued Cool Air Coming From Your Furnace? Check Your Filter

There are many reasons why it’s a good idea to replace your furnace’s air filter every 30 days. Clogged filters prevent proper airflow, leading to poor efficiency and a faster rate of wear and tear. Additionally, reduced airflow will overheat the system, at which point it will automatically shut down as a safety feature, leading to its fan blowing unheated air into your ducts.

Still Feeling Cool Air Coming From Your Furnace? Check the Pilot Light

While most newer furnaces use electric pilot lights, older models still use gas pilot lights. If there’s a clogged port or a faulty thermocouple in your furnace, the pilot light may not stay lit. A gas leak could also reduce the amount of gas flowing through the lines.


In addition to interfering with the heating process, these problems represent serious safety issues, so call your local HVAC technician right away for help. As you ask, “Why is my Newark furnace blowing cold air?” make sure to mention that the pilot light could be the cause.


Ask the Heating Pros for Help

True Blue Mechanical provides furnace maintenance, repairs, and installations to meet all of your heating needs. If your furnace is still blowing cold air after checking the common causes, our technicians can fix the problem for you. Contact us today to schedule service for your furnace.


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